I know one of the NB Volts should not go over 1.2v. I should try AUTO and see what happens.

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I adjusted the cpu-NB voltage to 1.225 as it had been in the past. I had left it on auto when I thought I could try one last attempt on higher oc. along with a bunch of other settings. I really did not check the actual voltage until you guys brought it to my attention. It was too high. On some earlier posts on TPU and overclockers.com some mentioned upping the multiplier with most of the settings on auto. It was an oversight by me that I am glad Skellatar pointed out. I just have to accept my overclock is not going above 4.64 GHZ. I also lowered my Northbridge frequency to about 2350 instead of slightly higher than 2400. MY HT frequency was lowered back to about 2850 from just above 3000. Sli8ghtly lower cinebench scores but I won't get freezes or blue screens and I won't cause cpu-nb damage.

i helped my friend overclock her cvf-z and fx 8350 to 4.63ghz its nice and stable she loves her new setup. she gots a evga gtx 660 and playing rift on all max settings and she can see things in the game she has never seen before. she just loves it

I adjusted the cpu-NB voltage to 1.225 as it had been in the past. I had left it on auto when I thought I could try one last attempt on higher oc. along with a bunch of other settings. I really did not check the actual voltage until you guys brought it to my attention. It was too high. On some earlier posts on TPU and overclockers.com some mentioned upping the multiplier with most of the settings on auto. It was an oversight by me that I am glad Skellatar pointed out. I just have to accept my overclock is not going above 4.64 GHZ. I also lowered my Northbridge frequency to about 2350 instead of slightly higher than 2400. MY HT frequency was lowered back to about 2850 from just above 3000. Sli8ghtly lower cinebench scores but I won't get freezes or blue screens and I won't cause cpu-nb damage.

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That really sucks, was hoping you can achieve higher clocks without killing the chip. The PC shop I picked up my 8350 had 3 different batches. I asked him for the highest one which was the 1244 vs. The other that were 1232 & 1236 I believe.

Os2wiz, have you tried playing with the bus speed. Or leave that at stock and just up the multi. Try OC'ing to 4.40GHz and leave the voltage on Auto. That was the first thing I did so I can determine a voltage estimate. I also turned on most of the power save options. What I achieved now is lower temps with no performance drops. Try it.

That really sucks, was hoping you can achieve higher clocks without killing the chip. The PC shop I picked up my 8350 had 3 different batches. I asked him for the highest one which was the 1244 vs. The other that were 1232 & 1236 I believe.

Os2wiz, have you tried playing with the bus speed. Or leave that at stock and just up the multi. Try OC'ing to 4.40GHz and leave the voltage on Auto. That was the first thing I did so I can determine a voltage estimate. I also turned on most of the power save options. What I achieved now is lower temps with no performance drops. Try it.

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I tried multiplier only and fsb. I have to admit I did not try every fsb level I did do obviously 200,210,220,230,
240s, and 270s. I may do better with temps if I remove the thermal paste and apply Artic Silver 5. I used the stock paste that was on the cooler. I could also try sanding away the nickel cpu covering and getting a smooth shiny copper cpu finish. I don't think I have the patience or temperament to do it properly. But that with the better thermal pastecwould cut temps another 8 to 10 degrees Celsius. Or a water loop that I consider hideous and wasting a lot of space. I am not pissed off really. Even at 4.6+ GHZ the chip performs quite nicely with the video card.
By the way I did not know the Crosshair V Formula Z uses a different bios than regular Crosshair V were you aware of that? I see now that our board is no longer produced and they haven't bothered to upgrade our boards utilities for Windows 8.

Welcome
Did you add any extra voltage to your 8120 OC? Reason I ask is I pushed my FX-8120 @ 4.40GHz running all 8-Cores stable at 1.375v. It may be possible to achieve this depending on your batch # and bios settings.

Welcome
Did you add any extra voltage to your 8120 OC? Reason I ask is I pushed my FX-8120 @ 4.40GHz running all 8-Cores stable at 1.375v. It may be possible to achieve this depending on your batch # and bios settings.

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Ahh, OK, noted, I was wondering why it crapped out at default vcore @3.7ghz, I'd believe it would go higher. Anyway, since it can be done by bumping vcore to >1.35v, I'll take note of this and try for a higher OC later. Games run just fine now, so I don't see a need for higher clockspeed yet, besides, I'm thinking of going Vishera, perhaps FX8350.

Ahh, OK, noted, I was wondering why it crapped out at default vcore @3.7ghz, I'd believe it would go higher. Anyway, since it can be done by bumping vcore to >1.35v, I'll take note of this and try for a higher OC later. Games run just fine now, so I don't see a need for higher clockspeed yet, besides, I'm thinking of going Vishera, perhaps FX8350.

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If you do get a 8350, be sure to check the batch numbers on the CPU's. The two numbers that come to mind is 1244 and 1236 which many have had great OC's with low voltage. Perhaps you can find a higher batch number that may give you even better results.

If you do get a 8350, be sure to check the batch numbers on the CPU's. The two numbers that come to mind is 1244 and 1236 which many have had great OC's with low voltage. Perhaps you can find a higher batch number that may give you even better results.

well managed to get a new cooler, treated myself from a well known auction site.
I got the Phanteks PH-TC14CS CPU Top Down Cooler. for a low price £26 so not much to lose.
It does not clear my RAM even if I turn the cooler around so I have ended up just using 1 fan.
Even so idle the temp is 27deg and running prime95 at 4.5GHz the temp ( as sensed by ASUS AI suite)was 57deg. And it is quitter than the stock cooler. Loudest fan I have is PSU , not sure if that can be addressed. Any particular settings I should use to make comparisons with ?
Also whilst cooler off I read the batch code FA 1240PGN so I guess I have one of the early 1240 ones.